USB dac SA9023 problem picoreplayer 6-7-8

Hello everybody
A friend of mine had the same problem with the same amplifier and he solved by installing moodaudio witch seems to recognise the USB SA9023 DAC of the amplifier.

I don't wan't something else than picoreplayer, how can I solve this problem ?
I tried with picoreplayer release 6-7 and 8 without success (usb not recognized and squeezerlite don't run)
Thanks